排序方式: 共有10条查询结果,搜索用时 15 毫秒
1
1.
2.
3.
4.
5.
6.
Microwave Absorbing Materials: Solutions for Real Functions under Ideal Conditions of Microwave Absorption 下载免费PDF全文
We present general equations for metal-substrate single-layer microwave absorbing materials. The optimum electromagnetic parameters and matching thicknesses for electric-loss, magnetic-loss, and electromagnetic-loss materials are given, and possible solutions for the equations and the corresponding theoretic curves are discussed as well. The results may be helpful for designing high-performance microwave absorbing materials. 相似文献
7.
Electromagnetic Parameters Model and Microwave Absorption for Composite Coatings Containing Magnetic Particles 下载免费PDF全文
Considering the eddy current effect of the magnetic metal particles in a high frequency electromagnetic field, we extend the Maxwell-Garnett law by introducing the eddy-effect parameter A which is as functions of the radius, permeability and electric conductivity of the metal particle medium. It is obvious that the computational result agrees with the experiment, which indicates that the extended Maxwell-Garnett law can be used to predict the effective electromagnetic parameters of a dilute metal-insulator composite medium in a high-frequency electromagnetic field. 相似文献
8.
9.
利用过渡金属掺杂的硅基团簇, 构建了一种自旋分子结; 并利用第一性原理方法, 对其电子自旋极化输运性质进行了研究. 计算表明, 通过过渡金属掺杂可以有效地产生自旋极化电流, 磁性金属Fe和非磁性金属Cr和Mn掺杂的体系呈现出较明显的自旋极化透射现象, 但分子结的自旋极化输运能力与团簇孤立状态下的磁矩无一致性.从Sc到Ni的掺杂, 体系的自旋极化透射能力先增大后迅速减小, 在Fe掺杂的Si12团簇中出现最大值.
关键词:
硅团簇
自旋极化输运
密度泛函理论
非平衡格林函数 相似文献
10.
1